First of all we draw a rough sketch of the required quadrilateral and write down the given dimensions.
Steps of Construction
1. We draw EA = 5 cm.
2. Then we make ∠XEA = 60°
3. With E as centre and radius 4 cm, we cut off ED = 4 cm along EX.
4. Now we make ∠EAY = 90°
5. With A as centre and radius 4.5 cm, we draw an arc to cut off AY at R.
6. At the end, we join DR.
Hence DEAR is the required quadrilateral.